Table 1.
Descriptive characteristics of 1,147 lung cancer patients with bone metastases and at least one subsequent SRE
| Characteristics | |
|---|---|
| Age at primary cancer diagnosis in yearsa Sex distribution, n (%) | 65.0 (58.5–72.5) |
| Male | 661 (57.6) |
| Female | 486 (42.4) |
| Tumor stage at primary cancer diagnosis, n (%) | |
| Localized | 62 (5.4) |
| Regional | 124 (10.8) |
| Metastatic | 930 (81.1) |
| Missing | 31 (2.7) |
| SRE, n (%) | |
| Single SRE | 282 (24.6) |
| Conventional external radiation therapy (CERT) | 214 (18.7) |
| Pathological fracture (PF)/osteoporotic fracture (OF) | 17 (1.5) |
| Spinal cord compression (SCC) | 41 (3.6) |
| Surgery to bone (SB) | 10 (0.9) |
| Multiple SREs | 865 (75.4) |
| Multiple treatments with CERTs only | 603 (52.6) |
| CERT combined with PF/OF, SCC and/or SB | 227 (19.8) |
| PF, SCC and/or SB | 35 (3.1) |
| Months from primary cancer diagnosis to bone metastasesa | 0.9 (0.1–3.3) |
| Months from bone metastases to first SREa | 0.4 (0.1–1.3) |
| Months from first SRE to end of follow-upa | 2.3 (0.9–3.1) |
Note:
a
Data presented as median (interquartile range).
Abbreviations: CERT, conventional external radiation therapy; n, number; SRE, skeletal-related event.